Import SQLite 3.10.2.

third_party/sqlite/patches/0002-Use-seperate-page-cache-pools-for-each-sqlite-connec.patch

-From 3a6d9302ff14aec82291c7e2212ce37b7453ce9f Mon Sep 17 00:00:00 2001
+From d0e21d482f39c92f444957859bc9252dc6bb5239 Mon Sep 17 00:00:00 2001
 From: rmcilroy <rmcilroy@chromium.org>
 Date: Thu, 20 Jun 2013 22:50:12 +0000
-Subject: [PATCH 03/16] Use seperate page-cache pools for each sqlite
+Subject: [PATCH 02/10] Use seperate page-cache pools for each sqlite
  connection.
 
 Due to multiple different subsystems using sqlite, the shared global page
 cache policy does not suite our use-cases on Chrome very well.  This CL
 enables a compile time flag to be set to disable shared cache pools.
 
 BUG=243769
 
 Original review URL: https://chromiumcodereview.appspot.com/17413004
 ---
  third_party/sqlite/src/src/pcache1.c | 6 +++++-
  1 file changed, 5 insertions(+), 1 deletion(-)
 
 diff --git a/third_party/sqlite/src/src/pcache1.c b/third_party/sqlite/src/src/pcache1.c
-index a8c3217..3fcee4b 100644
+index 7147f6a..76030f9 100644
 --- a/third_party/sqlite/src/src/pcache1.c
 +++ b/third_party/sqlite/src/src/pcache1.c
-@@ -567,6 +567,8 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){
-   ** PGroup.  In other words, separateCache is true for mode (1) where no
-   ** mutexing is required.
+@@ -668,6 +668,8 @@ static int pcache1Init(void *NotUsed){
+   ** private PGroup (mode-1).  pcache1.separateCache is false if the single
+   ** PGroup in pcache1.grp is used for all page caches (mode-2).
    **
 +  **   *  Always use separate caches (mode-1) if SQLITE_SEPARATE_CACHE_POOLS
 +  **
    **   *  Always use a unified cache (mode-2) if ENABLE_MEMORY_MANAGEMENT
    **
-   **   *  Always use a unified cache in single-threaded applications
-@@ -574,7 +576,9 @@ static sqlite3_pcache *pcache1Create(int szPage, int szExtra, int bPurgeable){
-   **   *  Otherwise (if multi-threaded and ENABLE_MEMORY_MANAGEMENT is off)
-   **      use separate caches (mode-1)
+   **   *  Use a unified cache in single-threaded applications that have
+@@ -677,7 +679,9 @@ static int pcache1Init(void *NotUsed){
+   **
+   **   *  Otherwise use separate caches (mode-1)
    */
--#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) || SQLITE_THREADSAFE==0
+-#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT)
 +#ifdef SQLITE_SEPARATE_CACHE_POOLS
 +  const int separateCache = 1;
-+#elif defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) || SQLITE_THREADSAFE==0
-   const int separateCache = 0;
- #else
-   int separateCache = sqlite3GlobalConfig.bCoreMutex>0;
++#elif defined(SQLITE_ENABLE_MEMORY_MANAGEMENT)
+   pcache1.separateCache = 0;
+ #elif SQLITE_THREADSAFE
+   pcache1.separateCache = sqlite3GlobalConfig.pPage==0
 -- 
-2.2.1
+2.7.0